Persuasive Logic & Reasoning

Persuasive Logic & Reasoning

Steven R. Van Hook, PhD

Reference Textbook

Logic and Contemporary Rhetoric: The Use of Reason in Everyday Life, by Howard Kahane and Nancy M. Cavender. Independence, KY: Cengage Learning, 2013. ISBN-10: 1133942288

Persuasive Logic & Reasoning

Unit 1

Foundational Terms & Concepts

Steven R. Van Hook, PhD

Let's develop our reasoning skills

Logic Clear reasoning Effective argument Fallacy analysis Coherence Problem solving Persuasion Induction Deduction

Intellect Courage Confidence Strength

Unit 1

Persuasive Logic & Reason

Steven R. Van Hook, PhD

GOOD & BAD REASONING

The Argument Structure

Premises and Conclusions: 1) Identical twins often have

different test scores (premise 1) 2) Identical twins inherit the

same genes (premise 2) 3) So environment must play some sort of part

in determining IQ (claim or conclusion)

Exercise:

Identify the Premises and Conclusions

Statement: "It is difficult to gauge the pain felt by animals because pain is subjective and animals cannot talk."

Premise 1: Pain is subjective; Premise 2: Animals can't

communicate; Conclusion: We cannot measure

the pain animals feel

If the premises are faulty, the conclusion may be faulty.

Argument Structure

1) It's always wrong to kill a human being (true or false premise?)

2) Capital punishment kills a human being (true or false premise?)

3) Capital punishment is wrong

(good or bad conclusion?)

Note: means `therefore'

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